import 'package:flutter/material.dart';

void main() {
  runApp(new MaterialApp(
    home: Scaffold(
      appBar: AppBar(
        title: Text("Sizedbox配置说明"),
      ),
      body: SizedBox(
          width: 100,
          height: 200,
          child: Container(color: Colors.pink),
      ),
    ),
  ));
}
